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Databasemanagement system
- 3. Data base
A collection of information organized in such a
way that a computer program can quickly
select desired pieces of data. You can think of
a database as an electronic filing system.
Example:
the employee details of an organization.
the availability of rooms in hotels.
the availability of flight tickets.
the availability of movie tickets.
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- 4. Field, records and files
Traditional databases are organized by
fields, records, and files.
A field is a single piece of information.
A record is one complete set of fields. And
A file is a collection of records.
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- 5. Hypertext database
An alternative concept in database design is
known as Hypertext.
In a Hypertext database, any object, whether it
be a piece of text, a picture, or a film, can be
linked to any other object.
Hypertext databases are particularly useful for
organizing large amounts of disparate
information, but they are not designed for
numerical analysis.
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- 6. Data base management system
To access information from a database, we
need a database management system (DBMS).
This is a collection of programs that enables us
to enter, organize, and select data in a
database.
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- 8. Data base model
A database model is a type of data model that
determines the logical structure of a database
and fundamentally determines in which
manner data can be stored, organized, and
manipulated.
The most popular example of a database
model is the relational model, which uses a
table-based format.
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- 9. Data base model type
Object based logical model.
the E-R model.
Record based logical model.
the relational model.
the network model.
the hierarchical model
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